Improvement in lathes for turning irregular forms



PATENT QFFICE.

, ELI K. wrsnt'n, or WARREN, OHIO.

IMPROVEMENT IN LATHES FOR TURNING IRREGULAR FORMS.

' Specification forming part of Letters Patent No. 127,266, dated May28, 1872.

Specification describing a new and Improved Lathe for Turning IrregularForms invented by ELI K. WIsELL, of Warren, in the county of Trumbulland State of Ohio.

Figure 1 represents a side elevation of my improved lathe. Fig. 2 is atop view of the same. Fig. 3 is a vertical transverse section on aslightly enlarged scale, the line 0 0', Fig. 2, indicating the plane ofsection. Fig. 4. is a detail end view, partlyin section, of the machine;and Fig. 5, a detail transverse section on the line k 70, Fig. 2.

Similar letters of reference indicate corresponding parts.

This invention relates to certain improvements on the spokemachine forwhich Letters Patent of the United States were granted to the presentapplicant on the 3d day of March, 1863, and 14th day of January, 1868.The object of the present invention is, first, to provide adjustablerests for the spokes or things under operation in such manner that thesame are only supported behind the cutter-head in whichever directionthey may be moved longitudinally. The invention consists in providingtwo vibrating supports-one on each side of cutter-headand in connectingtheir ends with a pivoted beam, which is oscillated to raise thesupportsalternately, and thus insure the aforementioned object. Another objectof the invention is to provide a balance for the vertically-adjustablehorizontally-reciprocating pattern-frame, whereby the same will be heldhorizontally to keep the pattern and spokes or things under operation intherightposition, and whereby it will also be eased off the pattern toprevent the rapid wear of the same and of the roller with which saidpattern is in contact. This second object is attained by the arrangementof a horizontal rail, which supports the front of the patternfframe, andis secured at the ends to levers that always keep it in a horizontalposition, but are weighted to crowd the rail upward whenever there is anopportunity for so doing, by the elevation of the pattern-frame.

A in the drawing represents the stationary frame of the machine. B istheshaft carrying the cutter-head G, and hung in bearings transversely inthe frame A. The shaft B receives continuous rotary motion by a systemof belts, to a, or equivalent means, from a driving-shaft,

D, which is hung in the end of the frame A. E is the reciprocatingframe, which carries the pattern F and the articles to be turned backand forth over the cutter-head. This frame E is, at the back of themachine, pivoted by ears b b to a stationary horizontal rod, d, on whichit can swing whenever it is raised or lowered by the pattern. The latterrests on and moves over a roller, 0, which has its bearings in ears thatproject from the frame A. Thus as the pattern moves over the roller 0 itwill cause the frame E to be swung up when a thicker and down when athinner part of it comes in contact with said roller, substantially asset forth in my aforesaid Letters Patent. In cross-pieces of the frame Eare the bearings of the several arbors, ff, to which the things to beshaped-be the same tenons, handles, or others-are secured. The arbors ff at one end of the frame E are, by gearings 9, connected with thejournals of the pattern F, so as to turn simultaneously therewith, alsoas substantially set forth in the aforementioned Letters Patent. Therequisite intermittent rotary motion is imparted to the pattern and thearticles to be shaped by a pawl, h, which is pivoted to a bell-crank,t', that rides over inclines j j on the frame A at the end of thestrokes of E, respectively. The pawl is thereby vibrated, and moves aratchet-wheel, Z, whose axle transmits the motion to the gearing. Infront, the reciprocating-frame E rests on a rail, G, which is, bypivoted levers HH, connected with the front of the frame A. The frame-Ehas rollers m m, that support it directly on the rail G, and ridethereon. One of the levers H has a weighted extension or arm, n. Theother lever may also be thus provided. By the weight I on n the rail Gis crowded upward against the frame E, and, whenever the latter iselevated by the action of the pattern, the rail G will followin factassisting in the elevation. The levers H being of equal lengths,

insure the constant horizontal position of the rail G, and also of theframe E that rests thereon. The twisting of the frame E, and theconsequent improper position of the articles to be shaped is therebyentirely avoided. The

weight I serves, also, by bearing against the under side of the frame E,to ease the pattern and reduce its weight and friction on the roller 6,thereby preserving both pattern and roll- E. s. YENTZER.

Tuck-.Creaser for Sewing-Machines.

$10,127,287 Patented May 28,'i872'.'

